root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# ary @j7-evm:/sys/module/dmatest/parameters# cat /sys/kernel/debug/dmaengine/summa dma0 (285c0000.dma-controller): number of channels: 26 dma1 (31150000.dma-controller): number of channels: 84 dma1chan0 | in-use (MEM_TO_MEM, chan0 pair [0x1000 -> 0x9000], PSI-L Native, TR mode) dma1chan1 | in-use (MEM_TO_MEM, chan1 pair [0x1001 -> 0x9001], PSI-L Native, TR mode) dma1chan2 | 2ba0000.mcasp:tx (MEM_TO_DEV, tchan16 [0x1010 -> 0xc507], PDMA[ ACC32 BURST ], TR mode) dma1chan3 | 2ba0000.mcasp:rx (DEV_TO_MEM, rchan16 [0x4507 -> 0x9010], PDMA[ ACC32 BURST ], TR mode) dma1chan4 | 4e00000.crypto:rx1 (DEV_TO_MEM, rchan17 [0x4000 -> 0x9011], PSI-L Native[ EPIB PSDsize:64 ], Packet mode) dma1chan5 | 4e00000.crypto:rx2 (DEV_TO_MEM, rchan18 [0x4001 -> 0x9012], PSI-L Native[ EPIB PSDsize:64 ], Packet mode) dma1chan6 | 4e00000.crypto:tx (MEM_TO_DEV, tchan17 [0x1011 -> 0xc000], PSI-L Native[ EPIB PSDsize:64 ], Packet mode) root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo 1 > iterations root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan0 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# cd /sys/kernel/debug/dmaengine root@j7-evm:/sys/kernel/debug/dmaengine# root@j7-evm:/sys/kernel/debug/dmaengine# ls 285c0000.dma-controller 31150000.dma-controller summary root@j7-evm:/sys/kernel/debug/dmaengine# cd .. root@j7-evm:/sys/kernel/debug# root@j7-evm:/sys/kernel/debug# ls 46000000.ethernet mmc0 asoc mtd bdi opp block pinctrl cec pm_genpd clear_warn_once pvr clk pwm debug_enabled ras devfreq regmap device_component regulator devices_deferred remoteproc dma_buf sched_debug dma_pools sched_features dmaengine sleep_time dri split_huge_pages energy_model suspend_stats extfrag swiotlb fault_around_bytes ti_sci_debug@44083000.dmsc gpio ubi hid ubifs iio usb interconnect virtio-ports megaraid_sas wakeup_sources memblock root@j7-evm:/sys/kernel/debug# cd dma_pools/ root@j7-evm:/sys/kernel/debug/dma_pools# ls pool_size_dma pool_size_dma32 pool_size_kernel root@j7-evm:/sys/kernel/debug/dma_pools# find . . ./pool_size_kernel ./pool_size_dma32 ./pool_size_dma root@j7-evm:/sys/kernel/debug/dma_pools# root@j7-evm:/sys/kernel/debug/dma_pools# cat pool_size_kernel 262144 root@j7-evm:/sys/kernel/debug/dma_pools# cat pool_size_dma 262144 root@j7-evm:/sys/kernel/debug/dma_pools# cat pool_size_dma32 262144 root@j7-evm:/sys/kernel/debug/dma_pools# root@j7-evm:/sys/kernel/debug/dma_pools# root@j7-evm:/sys/kernel/debug/dma_pools# root@j7-evm:/sys/kernel/debug/dma_pools# cd ../dma dma_buf/ dma_pools/ dmaengine/ root@j7-evm:/sys/kernel/debug/dma_pools# cd ../dma_buf/ root@j7-evm:/sys/kernel/debug/dma_buf# ls bufinfo root@j7-evm:/sys/kernel/debug/dma_buf# cat bufinfo Dma-buf Objects: size flags mode count exp_name ino 04915200 00000002 00080007 00000003 carveout_heap 00020242 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020241 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020240 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020239 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020238 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020237 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020236 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020235 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020234 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020233 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020232 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020231 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020230 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020229 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020228 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020227 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020225 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020224 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020217 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020216 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020215 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020214 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020213 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020212 Attached Devices: dma_buf_phys Total 1 devices attached 00851968 00000002 00080007 00000003 carveout_heap 00020211 Attached Devices: dma_buf_phys Total 1 devices attached 00851968 00000002 00080007 00000003 carveout_heap 00020210 Attached Devices: dma_buf_phys Total 1 devices attached 00851968 00000002 00080007 00000003 carveout_heap 00020209 Attached Devices: dma_buf_phys Total 1 devices attached 00851968 00000002 00080007 00000003 carveout_heap 00020208 Attached Devices: dma_buf_phys Total 1 devices attached 00851968 00000002 00080007 00000003 carveout_heap 00020207 Attached Devices: dma_buf_phys Total 1 devices attached 00851968 00000002 00080007 00000003 carveout_heap 00020206 Attached Devices: dma_buf_phys Total 1 devices attached 00589824 00000002 00080007 00000003 carveout_heap 00020205 Attached Devices: dma_buf_phys Total 1 devices attached 00589824 00000002 00080007 00000003 carveout_heap 00020204 Attached Devices: dma_buf_phys Total 1 devices attached 00589824 00000002 00080007 00000003 carveout_heap 00020203 Attached Devices: dma_buf_phys Total 1 devices attached 00589824 00000002 00080007 00000003 carveout_heap 00020202 Attached Devices: dma_buf_phys Total 1 devices attached 00589824 00000002 00080007 00000003 carveout_heap 00020201 Attached Devices: dma_buf_phys Total 1 devices attached 00589824 00000002 00080007 00000003 carveout_heap 00020200 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020199 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020198 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020197 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020196 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020195 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020194 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020193 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020192 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020191 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020190 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020189 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020188 Attached Devices: dma_buf_phys Total 1 devices attached 00327680 00000002 00080007 00000003 carveout_heap 00020187 Attached Devices: dma_buf_phys Total 1 devices attached 00327680 00000002 00080007 00000003 carveout_heap 00020186 Attached Devices: dma_buf_phys Total 1 devices attached 00327680 00000002 00080007 00000003 carveout_heap 00020185 Attached Devices: dma_buf_phys Total 1 devices attached 00327680 00000002 00080007 00000003 carveout_heap 00020184 Attached Devices: dma_buf_phys Total 1 devices attached 00327680 00000002 00080007 00000003 carveout_heap 00020183 Attached Devices: dma_buf_phys Total 1 devices attached 00327680 00000002 00080007 00000003 carveout_heap 00020182 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020181 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020180 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020179 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020178 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020177 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020176 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020175 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020174 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020173 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020172 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020171 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020170 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020169 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020168 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020167 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020166 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020165 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020164 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020163 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020162 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020161 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020160 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020159 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020158 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020157 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020156 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020155 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020154 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020153 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020152 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020151 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020150 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020149 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020148 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020147 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020146 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020145 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020144 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020143 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020142 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020141 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020140 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020139 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020138 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020137 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020136 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020135 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020134 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020133 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020132 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020131 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020130 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020129 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020128 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020127 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020126 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020125 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020124 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020123 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020122 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020121 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020120 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020119 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020118 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020117 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020116 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020115 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020114 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020113 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020112 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020111 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020110 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020109 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020108 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020107 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020106 Attached Devices: dma_buf_phys Total 1 devices attached 00851968 00000002 00080007 00000003 carveout_heap 00020105 Attached Devices: dma_buf_phys Total 1 devices attached 00851968 00000002 00080007 00000003 carveout_heap 00020104 Attached Devices: dma_buf_phys Total 1 devices attached 00589824 00000002 00080007 00000003 carveout_heap 00020103 Attached Devices: dma_buf_phys Total 1 devices attached 00589824 00000002 00080007 00000003 carveout_heap 00020102 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020101 Attached Devices: dma_buf_phys Total 1 devices attached 00262144 00000002 00080007 00000003 carveout_heap 00020100 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020099 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020098 Attached Devices: dma_buf_phys Total 1 devices attached 00327680 00000002 00080007 00000003 carveout_heap 00020097 Attached Devices: dma_buf_phys Total 1 devices attached 00327680 00000002 00080007 00000003 carveout_heap 00020096 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020095 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020094 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020093 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020092 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020091 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020090 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020089 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020088 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020087 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020086 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020085 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020084 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020083 Attached Devices: dma_buf_phys Total 1 devices attached 00131072 00000002 00080007 00000003 carveout_heap 00020082 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020081 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020080 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020079 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020078 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020077 Attached Devices: dma_buf_phys Total 1 devices attached 02490368 00000002 00080007 00000003 carveout_heap 00020076 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020075 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020074 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020073 Attached Devices: dma_buf_phys Total 1 devices attached 00786432 00000002 00080007 00000003 carveout_heap 00020072 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020071 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020070 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020069 Attached Devices: dma_buf_phys Total 1 devices attached 04915200 00000002 00080007 00000003 carveout_heap 00020068 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020067 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020066 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020065 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020064 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020063 Attached Devices: dma_buf_phys Total 1 devices attached 02097152 00000002 00080007 00000003 carveout_heap 00020062 Attached Devices: dma_buf_phys Total 1 devices attached 02097152 00000002 00080007 00000003 carveout_heap 00020061 Attached Devices: dma_buf_phys Total 1 devices attached 02097152 00000002 00080007 00000003 carveout_heap 00020060 Attached Devices: dma_buf_phys Total 1 devices attached 02097152 00000002 00080007 00000003 carveout_heap 00020059 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020058 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020057 Attached Devices: dma_buf_phys Total 1 devices attached 00196608 00000002 00080007 00000003 carveout_heap 00020056 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020054 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020053 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00020051 Attached Devices: dma_buf_phys Total 1 devices attached 18546688 00000002 00080007 00000003 carveout_heap 00022984 Attached Devices: dma_buf_phys Total 1 devices attached 00065536 00000002 00080007 00000003 carveout_heap 00022956 Attached Devices: dma_buf_phys Total 1 devices attached Total 185 objects, 205455360 bytes root@j7-evm:/sys/kernel/debug/dma_buf# root@j7-evm:/sys/kernel/debug/dma_buf# ^C root@j7-evm:/sys/kernel/debug/dma_buf# cd /sys/module/dmatest/ holders/ notes/ parameters/ sections/ root@j7-evm:/sys/kernel/debug/dma_buf# cd /sys/module/dmatest root@j7-evm:/sys/module/dmatest# root@j7-evm:/sys/module/dmatest# ls coresize initsize notes refcnt srcversion uevent holders initstate parameters sections taint root@j7-evm:/sys/module/dmatest# cd .. root@j7-evm:/sys/module# ls 8021q keyboard snd_timer 8250 llc spurious 8250_core lockd srcutree arm_smc_wdt loop stp arm_smmu megaraid_sas sunrpc arm_smmu_v3 mmcblk sysrq armmmci mrp tc358767 auth_rpcgss nfs tcp_cubic authenc nfs_layout_flexfiles tee blk_cgroup nfs_layout_nfsv41_files ti_j721e_cpsw_virt_mac block nfsv4 ti_k3_dsp_remoteproc bq27xxx_battery omap_mailbox ti_k3_r5_remoteproc brd omap_rng tpm can optee tpm_i2c_infineon cdns3 pci_hotplug ubi cdns3_ti pcie_aspm ubifs cdns_dphy phy_xgene udc_core cdns_pltfrm printk ufshcd_core cec pru_rproc ufshcd_pltfrm configfs pruss usb_common cpufreq psmouse usbcore crc_t10dif pvrsrvkm v4l2_mem2mem crct10dif_ce random vfio cros_ec_dev rcupdate vfio_iommu_type1 cryptodev rcutree vfio_pci cryptomgr rng_core vfio_virqfd dmatest roles videobuf2_common dns_resolver rpmsg_char videobuf2_dma_contig drm rpmsg_kdrv_switch videobuf2_dma_sg drm_kms_helper rti_wdt videobuf2_memops dvb_core sa2ul videobuf2_v4l2 edac_core sbsa_gwdt virtio_blk fb sch_fq_codel virtio_net firmware_class scsi_mod virtio_pci fuse sdhci virtio_rpmsg_bus garp sha512_generic vt hdma sky2 vxd_dec hdma_mgmt smc91x vxe_enc hid smsc911x watchdog i2c_algo_bit snd workqueue icss_iep snd_pcm xhci_hcd ipv6 snd_soc_j721e_evm xhci_plat_hcd irq_pruss_intc snd_soc_pcm3168a xz_dec kernel snd_soc_pcm3168a_i2c root@j7-evm:/sys/module# cd dmatest/ root@j7-evm:/sys/module/dmatest# ls coresize initsize notes refcnt srcversion uevent holders initstate parameters sections taint root@j7-evm:/sys/module/dmatest# cd sections/ root@j7-evm:/sys/module/dmatest/sections# ls __bug_table __jump_table __param root@j7-evm:/sys/module/dmatest/sections# cd .. root@j7-evm:/sys/module/dmatest# ls coresize initsize notes refcnt srcversion uevent holders initstate parameters sections taint root@j7-evm:/sys/module/dmatest# cd parameters/ root@j7-evm:/sys/module/dmatest/parameters# ls alignment max_channels run transfer_size channel norandom test_buf_size verbose device noverify test_list wait dmatest polled threads_per_chan xor_sources iterations pq_sources timeout root@j7-evm:/sys/module/dmatest/parameters# cat test_ cat: can't open 'test_': No such file or directory root@j7-evm:/sys/module/dmatest/parameters# cat test_list root@j7-evm:/sys/module/dmatest/parameters# cat channel root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan0 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan1 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan2 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan3 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan4 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan5 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan6 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan7 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan8 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan9 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan99 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan999 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma0chan9999 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan0 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan1 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan2 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan3 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan4 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan5 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan6 > channel -sh: echo: write error: Device or resource busy root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan7 > channel root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo 1 > run root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# cat run N root@j7-evm:/sys/module/dmatest/parameters# echo 1 > run root@j7-evm:/sys/module/dmatest/parameters# echo 1 > run root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo 1 > run root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# ls -l /^C root@j7-evm:/sys/module/dmatest/parameters# ^C root@j7-evm:/sys/module/dmatest/parameters# cat channel root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan7 > channel root@j7-evm:/sys/module/dmatest/parameters# echo 1 > run root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan8 > channel root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan9 > channel root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan10 > channel root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan11 > channel root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan12 > channel root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan13 > channel root@j7-evm:/sys/module/dmatest/parameters# echo dma1chan14 > channel root@j7-evm:/sys/module/dmatest/parameters# cat channel dma1chan14 root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# root@j7-evm:/sys/module/dmatest/parameters# echo 1 > run root@j7-evm:/sys/module/dmatest/parameters#